US PATENT SUBCLASS 564 / 307
.~.~.~ Amino nitrogen and a ring bonded directly to the same ring, and any other amino nitrogen in the compound is bonded directly to one of the rings

Current as of: June, 1999
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564 /   HD   ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES

*  DD  ORGANIC COMPOUNDS (Class 532, Subclass 1) {1}
1  DF  .~ AMINO NITROGEN CONTAINING (E.G., UREA, SULFONAMIDES, NITROSAMINES, OXYAMINES, ETC., AND SALTS THEREOF) {37}
305  DF  .~.~ Benzene ring containing {24}
307.~.~.~ Amino nitrogen and a ring bonded directly to the same ring, and any other amino nitrogen in the compound is bonded directly to one of the rings {2}
308  DF  .~.~.~.~> Polycyclo ring system
309  DF  .~.~.~.~> Benzidines

DEFINITION

Classification: 564/307

(under subclass 305) Compounds wherein a benzene ring is bonded directly to another ring and one or more amino nitrogens are bonded directly only to either ring or both rings.

(1) Note. This subclass contains, for example: [figure] [figure]